unfortunate surprise with the recorder

I got some unfortunate bad surprise when I powered on my Sound Devices 788t today. Neither the internal hard drive nor the compact Flash card was recognized.
After few seconds, a screen showed “updating Firewire/USB software”. This really strange behaviour prevent me from recording. I tried to restart the device many times.
After maybe ten attempts, it finally worked fine. I can’t explain why this happen. I contacted the technical support at Sound Devices, waiting now for some info.
I will keep update on this issue.